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This looks more like a cacheing issue though. You can try running a rebuild and restart, that should reset the cache buster.
I can change admin control panel language to Chinese (Taiwan) ,
but i see nodebb/public/language/zh_TW not ACP language.
So I can only change nodebb/src/views/admin files?
Yeah, we haven't internationalized the ACP yet... I don't think we are planning to do this until 1.x because there are potentially a lot of changes to the control panel that will be made from now until then
ok, thx you.
Technically, translation is there, there just aren't any tables for it yet.